rollup.config.js

import terser from "@rollup/plugin-terser";

const devMode = (process.env.NODE_ENV === 'development');
console.log(`${devMode ? 'development' : 'production'} node bundle`)
export default [
    {
        input: 'src/index.js',
        output: {
            file: 'dist/index.js',
            format: 'es',
            sourcemap:devMode ? 'inline' : false,
            plugins: [
                terser({
                    ecma:2020,
                    mangle:{toplevel:true},
                    compress: {
                        module:true,
                        toplevel:true,
                        unsafe_arrows:true,
                        drop_console: !devMode,
                        drop_debugger: !devMode,
                    },
                    output: {
                        quote_style: 1,
                    }
                })
            ],
        }
    }
]